U.S. Federal Reserve

Yellen Testimony.JPEG-0377d.jpg

Federal Reserve Chair Janet Yellen testifies on Capitol Hill in Washington, Tuesday, Feb. 11, 2014, before the House Financial Services Committee hearing. Yellen said Tuesday that if the economy keeps improving, the Fed will take "further measured steps" to reduce the support it's providing through monthly bond purchases. (AP Photo/Cliff Owen)

Yellen Testimony.JPEG-06208.jpg

Federal Reserve Chair Janet Yellen testifies on Capitol Hill in Washington, Tuesday, Feb. 11, 2014, before the House Financial Services Committee hearing. Yellen said Tuesday that if the economy keeps improving, the Fed will take "further measured steps" to reduce the support it's providing through monthly bond purchases. (AP Photo/Cliff Owen)

Yellen Testimony.JPEG-04e23.jpg

Federal Reserve Chair Janet Yellen testifies on Capitol Hill in Washington, Tuesday, Feb. 11, 2014, before the House Financial Services Committee hearing. Yellen said Tuesday that if the economy keeps improving, the Fed will take "further measured steps" to reduce the support it's providing through monthly bond purchases. (AP Photo/Cliff Owen)

8317beb0a6325b054b0f6a7067004f31.jpg

Italy's Karin Knapp, left, is mobbed by teammates after defeating United States' Alison Riske 6-3, 7-5, during a Fed Cup world group tennis match on Sunday, Feb. 9, 2014, in Cleveland. (AP Photo/Tony Dejak)